软岩蠕变试验与理论模型分析的对比

Comprison Research of Creep Expriments and the Analysis of the Theorial Model of Soft Rocks

使用Instron - 1346型电液伺服刚性试验机 ,采用陈氏加载法 ,作了软岩的单轴和三轴蠕变试验。利用非牛顿体粘性元件构成五元件的改进西原正夫模型 ,探讨了与时间有关的软岩一维和三维的本构方程和蠕变方程 ,全面反映了软岩真实的三阶段蠕变实验规律。通过非线形的麦夸脱法求得的软岩流变力学参数形成的理论结果与软岩的实验结果的对比分析 。

Uniaxial and triaxial creep experiments of soft rocks aredone by Chen Applying Method and the Instron-1346 eletronic-fluid serving compression machine. The authors use the five-substance model and discuss the one and three-dimentional constitutive equations and creep ones. It is found that the new model well describes the full creep procedure of soft rocks. The rheological parameters of the creep equations are calculated by the Marquart Method and the forecast curves are drawn. In comprison with the experimental curves,the theorial results are proved.